Eugene was autistic and wouldn't speak to anyone. a therapist who was working with eugene initially gave him a cookie every time he made any sound at all. this switched to only giving cookies when eugene said a complete word, and eventually only for complete sentences. based on what is known about operant conditioning, you should conclude that the therapist developed eugene's speech skills using the process known as:

Put these events in the correct order #1-4. cause: world war 1 caused heavy casualties and property damage throughout europe. many people barely had enough food to eat or coal to stay warm. what happened next? question 1 options: russia, now led by lenin, became the first communist nation in history. communism soon spread to many small countries near russia, and eventually spread to cuba, china, and vietnam. led by vladimir lenin, a group called the bolshevik party gained the support of the people and overthrew russia’s monarchy, killing czar nicholas ii and his family. russian citizens, who were starving and poor, became angry at the ruling class who held all of the nation’s wealth. (write them in order of which they happened)